Key Lime Pie (3-Ingredient Filling)

A fork with a bite of key lime pie rests on the plate with the remaining slice. The rest of the pie is in the background.

5 from 1 vote

Key Lime Pie (3-Ingredient Filling)

Creamy & refreshing Key Lime Pie with a 3-ingredient filling, baked into a graham cracker crust & topped with whipped cream. A delicious summertime treat!

Prep Time10

Cook Time15

Cooling Time3

Total Time3 25

Course: Dessert

Cuisine: American

Servings:

Calories: 332kcal

Author: Leona Konkel

Equipment

9-inch pie plate
mixer
juicer (optional but recommended if using whole limes)

Ingredients

1 graham cracker crust (try my Homemade Graham Cracker Crust!)

Pie Filling

3 egg yolks
14 ounces sweetened condensed milk (1 can)
⅔ cup key lime juice (160 grams)
Whipped cream (for topping; made from ¾ cup whipping cream and 2 tablespoons sugar)

Instructions

Your crust can be room temperature, or freshly par-baked and warm.
Beat the egg yolks with an electric hand mixer or the whisk attachment of a stand mixer for 5 minutes, until the yolks have lightened in color.
Add sweetened condensed milk and beat for another 3 minutes.
Add the lime juice and stir until combined.
Scrape filling into the crust and bake at 350F. Bake for 15 minutes if using a premade or room temperature pie crust. If your crust is still warm from the oven, bake for 10 minutes.
The pie is done when filling is set. The surface of the pie should be not shiny, and the center will not be sloshy, and will just barely jiggle. Cool for 30 minutes at room temperature, and then refrigerate until cold - about 3 hours.
Top with whipped cream before serving. Store leftovers in the refrigerator for up to 4 days.

Notes

Although you can use regular limes, using a bottle of key lime juice saves time and tastes better. Do not use regular bottled lime juice.

Sweetened condensed milk is not the same as evaporated milk, which is thinner and unsweetened. Do not try to substitute one for the other.

For instructions on whipping cream, see my Coconut Cream Pie recipe.

This recipe is adapted from both Smitten Kitchen and the Joy of Baking.

Calorie count is an estimate only and includes the calories in the graham cracker crust, but not in whipped cream. Calorie count for only the filling would be 186 calories per serving.

Nutrition